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Ch 2 Psy Review

Ch 2 Review Random Notes

Dendrites Receives Messages
Axons Carry messages out to other cells
Glial Cells Grey/fatty, provide support for neurons to grow on; deliver nutrients to neurons; produce myelin to coat axons; clean up waste products and dead neurons
Myelin Fatty substances produced by glial cells; insulates, protects, and speeds up neural impulses
Resting Potential Not firing a neural impulse
Action Potential Firing electrical charge in neuron
Axon Terminals "limbs"/ends of neurons
Synaptic Knob Ends of axon terminals, contains synaptic vesicles
Neurotransmitters Chemicals of molecules inside synaptic vesicles... from one cell causes next cell to fire
Agonists Mimic or enhance effects of neurotransmitters on receptor sites of next cell, increasing or decreasing activity of cell
Antagonists Block or reduce cells response to the action of other chemicals or neurotransmitters
Reuptake Neurotransmitters are taken back (sucked) back into synaptic vesicles
Sensory Neurons Carries info from senses to central nervous system (afferent)
Interneurons Connect sensory neurons to motor neurons
Motor Neurons Carry messages from spinal cord to the muscles and glands
Reflex Arc Sensory neurons to interneurons to motor neurons resulting in reflex action
Parasympathetic System Eat, Drink, Rest
Sympathetic Fight or Flight
Created by: ANursingStudent